Archibald bannatyne



(No Model.)

A. BANNATYNE. CLOCK WINDING MECHANISM.

No. 427,292. Patented May 6, 1890.

UNITED STATES PATENT OFFICE.

ARCHIBALD BANNATYNE, OE XVATERBURY, CONNECTICUT, ASSIGNOR TO THE \VATERBURY CLOCK COMPANY, OF SAME PLACE CLOCK-WINDING MECHANISM.

SPECIFICATION forming part of Letters Patent No. 427,292, dated May 6, 1890. Application filed February '7, 1890. Serial No. 339,555. (N8 model.)

To all whom it may concern:

Be it known that I, AROHIBALD BANNATYNE, of WV-aterbury, in the county of New Haven and State of Connecticut, have invented new Improvements in Clocks; and I do hereby declare the following, when taken in connection with accompanying drawings and the letters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent, in

Figure 1, a broken sectional view showing the front and back plates of a clock-movement, the mainspring thereof, the barrel which in closes the said spring, the mainspringarbor, the ratchet, and the winding-key; Fig. 2, a detached View in elevation, showing the ratchet in which my invention chiefly resides.

My invention relates to an improvement in clocks, the object being to provide simple, cheap, and reliable means for securin g a maintaining power on the train when the clock is being wound.

\Vith these ends in view my invention consists in certain details of construction and combination of parts, as will be hereinafter described, and pointed out in the claims.

In my improved construction I employ a ratchet A, having two hubs B and C made integral with it and extending from its opposite faces, The inner hub 13 is reduced to form a shoulderD corresponding in depth to the thickness of the back movementplate E, which is provided with an opening F, corresponding in size to the diameter of the said hub, the extreme inner end of which receives the spr'ingbarrel G, which is secured to the hub by the swagingdown of the end thereof upon the inner face of the barrel. this construction the ratehet vheel bears directly against and is supported by the rear face of the movement-plate E, while the spring-barrel bears directly against and is supported by the outer face of the said movement-plate, whereby both the ratchet and barrel are relieved from much strain and steadied. The said hub 13 is provided with a central opening H, receiving the inner end of the mainspring-arbor I, while the hub C 1s provided with a larger threaded opening J,

Under adapted to receive the threaded nipple K of the winding-stem L. The threaded opening J leads into the opening H, so that the inner end of the winding-arbor may be oiled from the outer end of the hub C. A shoulder M, formed in the hub where the two openings H and J merge into each other, prevents the threaded nipple K of the winding-stem from entering the hub too far. The outer end of the mainspring N is attached to the barrel mainspring-hook 0, while the inner end of the said spring is attached to the arbor mainspring-hook S in the usual manner. Now, when the clock is wound by the winding-key the barrel and ratchet will revolve together, and thereby wind the mainspring, the power of which, however, will not be removed from the train during the operation of winding it, inasmuch as the barrel and ratchet rotate entirely independently of the arbor to which one end of the mainspring is attached.

By making the ratchet and the two hubs -in one piece and shouldering the inner hub to conform to the thickness of the back movement-plate, so that both the ratchet and barrel will bear against the said plate and be supported thereby, I secure a very simple and strong construction, whiclr is cheap to produce and assemble, and durable in use.

I am aware that it is not broadly new to secure the ratchet and mainspring-barrel together and rotate them independently of the mainspring arbor, and do not therefore broadly claim that construction, but only my peculiar form and arrangement of parts.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In the winding mechanism of a clock, a ratchet having two hubs made integral with it and projecting from its rpposite faces, one of the said hubs being shouldered to correspond to the thickness of the movement-plate through which it passes and in which it rotates, so that the ratchet and the mainspringbarrel, which is secured to the shouldered end of the hub on the opposite side of the plate, will bear directly against and be supported by the opposite faces of the same, substantially as described.

2. In the Winding mechanism of a clock, and the barrel will bear directly against and the combination, with the inainspring-barrel, are supported by the opposite faces of the inainspring-arbor, and the Winding-key of said plate, and having an opening formed in 15 the clock, of a ratchet having two hubs made it to receive one end of the 1nainspring-arbor,

5 integral with it, and respectively projecting the said openings formed in the hubs comfrom its opposite faces, one hub having" an municating, with each other, substantially as opening to receive the winding-key and the described.

other hub bein shouldered to conform to the T r thickness of the movement-plate through AROHIBALD BANLAF IO which it passes, and having the mainspring- Witnesses:

barrel secured to it on the opposite side of WM. A. HOLGATE,

the plate from the ratchet, so that the ratchet ABM. Oi DEPEW. 

